linux-kernel - Re: [PATCH v2] arm64: dts: rockchip: Adjust the HDMI DDC IO driver strength for rk3588

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Message-ID: <174946455535.762051.10507198799610616035.b4-ty@sntech.de>
Date: Mon,  9 Jun 2025 12:22:58 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: Andy Yan <andyshrk@....com>
Cc: Heiko Stuebner <heiko@...ech.de>,
	simic@...jaro.org,
	krzk+dt@...nel.org,
	robh@...nel.org,
	devicetree@...r.kernel.org,
	conor+dt@...nel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	algea.cao@...k-chips.com,
	Andy Yan <andy.yan@...k-chips.com>
Subject: Re: [PATCH v2] arm64: dts: rockchip: Adjust the HDMI DDC IO driver strength for rk3588


On Thu, 22 May 2025 10:05:24 +0800, Andy Yan wrote:
> For the RK3588 HDMI controller, the falling edge of DDC SDA and SCL
> almost coincide and cannot be adjusted by HDMI registrer, resulting
> in poor compatibility of DDC communication.
> 
> An improvement of the compatibility of DDC can be done by increasing
> the driver strength of SCL and decreasing the driver strength of SDA
> to increase the slope of the falling edge.
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: rockchip: Adjust the HDMI DDC IO driver strength for rk3588
      commit: af9feb0b85f92d2972061224839c5fea5ee39f6d

Best regards,
-- 
Heiko Stuebner <heiko@...ech.de>